Heat-exchange apparatus



May 24 1927.

A. R. VILA HEAT EXCHANGE APPARATUS v Filed oct. 25 1924 3 Sheets-sheet 1 y w m n E e l: wl-T* A TTORNE Y.

May 24, 1927.

1,630,148 A. R. VILA HEAT EXCHANGE APPARATUS Filed ovct. 25, 1924 s sheets-shea 2 lZV 2.

@2 .54 f 2f h e0 .5 I f 22 I 3' CD I Q Q 4 n oo 4 INVENTOR.

ATTORNEY.

1927. May 24 A. R. vlLA HEAT EXCHANGE APPARATUS 3 Sheets-Sheet 3,

Filed Oct. 25. 1924 Patented May 24, 1927.

UNITED STATES encreur orifice.

AQUILINO R. VILA, F HABANA, CUBA, ASSIGNOR '10 COMPANIA CUBANA ECOO- KIZADORA DE COMBUSTIBLE A., 0F HABANA, CUBA, A CORGLRATION 0F GUBA.

HEAT-EXCHANGE APPARATUS.

Application filed October 9.5, 1924, Serial No. 745,796, and in V(luna October 2, 1924.

This invention relates to heat exchange apparatus especially adapted tor use for heating Water for feeding a steam boiler, or 'heating sugar juices in the manufacture oit sugar, and its object is to provide an .imi proved apparatus for effecting such heating ey using the exhaust steam ot' steam turbines or engines to heat a plurality ot heaters through which the Water to be heated cir-y culates, and thus effect a very important economy et' fuel.

With the above and other objects in view` the invention consists in the construction, combination and arrangement of devices hereinafter described and claimed'.

ln the accompanying drawings- Fig. 1 is a side elevation of a heat eX- change plant constructed and arranged in` accordance with this inventori.

Fig. 2 is a front elevationof the same.

. Fig. 3 is a cross vertical sectionon line 3-3 of F ig. 1.

Fig. 4 is a. longitudinal vertical ysection on line 4 4 of Fig. 2.

My improved heat exchange plant comprises a cylindrical or boiler shaped tank 1 Vdesigned to receive the liquid 2 to be heated. Said tank is mounted on tivo suliip'orts, one near each end, each support being formed Vot a pair otuprights 3 which are metal I-beams provided with widened bases 4 formed by angularplates, the tivo uprights of each pair being connected together by a metallic segment shaped piece 5, entering under the tank 1, one upright of a pair being connected to one upright of the other pair, at each side of tank 1, by a horizontal I-beam 6 connected thereto by angular pieces 7 and Which is reinforced by braces 8 which are also metallic angular cross section pieces. Tank 1 'is of a construction Similar to that ot inner furnace boilers, and has a cylindrical body 9 which is eccentric with respect to the outer acket and which projects at its ends beyond the same, the cylindrical body 9 being secured to the heads by flanged collars 10. vThe interior of said cylindrical body 9 is occupied by tivo groups of liquid tubes 11 and 12, Whose ends are closely fitted in openings formed in vertical vplates 13 and 14 which form the heads of said cylindrical body 9, and which are secured in position on the ends of the cylindrical inner body 9 by means ot flanged collars 15 and 16 respectively.

A semi-spherical hollow cap 17 is secured y on the outer side of the rhead 13 and affords communication between said groups of tubes. A cap 19 is secured on the outer side of the head 14 and is provided with a straight short pipe 20 and` a curved tube or elboiv 21. The pipe 2O is connected to a llshaped tube 22 which leads from the out-` let of a pump 24 and is provided With a valve 23 as, shown. Said pump is mounted on 'traine 25 connected to one of the supports 3. The intake of said pump 24 is connected by tube 26 which has a valve 2T with a tube 98 which leads to the bottom of the boiler. A tube 29 also leads from the tube 26 and has a valve 30.

The curved tube 21 is connected through tube 31 and an elbow 32 with a group of tubes 37 which are arranged in a cylinder 36 substantially identical With the cylinder 9. Said cylinder 36 also has a group oi tubes 38 and heads 35 39 through which the ends of the tubes 37, 3S extend. A hollow semi-spherical cap 42 is secured on the outer side of head 39, said head being secured to an angle collar 41 and the head being secured to an angle collar 40. A tube 34 leeds from one end of the. group of tubes The cylinder 36 is arranged above the boiler 1 and is supported on the upper ends of tubes 43 which rise from the boiler and are connected thereto at 44,45 respectively. One of said tubes hasa branch 46 ktor the intake of a supply otliquid to be heated and the other has a branch47 for outlet of'steam from the boiler. A' manhole cover 49 closes an opening 48 in the top of the boiler.

The exhaust steam from the steam turbines or engines reaches the plant through a horizontal tube 5() Which by means ofl a cross-fitting 51 is connected to tivo vertical branches 52 and 53 which. are united by a T with a short vertical tube 55 which discharges in an opening formed in cylinder 9` at its projecting end outside boiler 1. From the cross tit-ting 51 leads another tube 56 to a safety valve 58 which through a short vertical tube 59 connects With an inlet 60 toi-mcd at the center of the length of the outer cylinder 36 so that it may cause the exhaust steam from the steam turbines or engines to pass directly into said cylinder.

The plant is provided With a Water gauge 61 which is connected to a close metal vertieal tribe 62. which is connected in turn by a lower-` l. `aneh G3 to the bodyv ot boiler `t at its lower part and b f an ripper brauch 64 to another tube Git which leads upwardly troui the bodyv oi ew'linder 3G and ,is provided with a pressure ljauge G5.

In this apparatus the liquid to be heated enters at the atmospheric temperature .in tank t through tube ttl and annexed supporting eondnit lll, and troni the tank is loreed by the pun'ip il through tubes Q6 and 28. whieh punip injeets the liquid of tank l into the heater fl in the interior of said tank. causing liquid to pass previously troni one to the other end through the lower bunrh ol liquid tubes il and then reversely through the liquid tubes ot the upper bunch l2, during: which inoif'einent the said liquid halted-'bj'Y the exhaust steaiu which fills cylinder t) and which has entered through the tube that eonununieates with the. vertical tubes ai and 53 whirh in turn eonununieate with inlet tube 50 Jr'or the exhaust'y steam. The liquid in tank 't has been also heated previously to its entrauee into the heater 9 through the h `at radiated to the mass Ot" liquid of tank l. by the eyliinlrieal bod)v 9 whieh Crosses the inass o't' liquid and whosel interior is charged with exhaust steain. The hot liquid Corning l'roni the buneh of tubes l2 is dreeted upwardl)Y b v the proper pressuri` ot puinp 2l'. passing through tubes 2l., Ill and 3Q. and entering into the bunch o't liquid tubes Il? ot heater Btl at the exterior ot' tank l tor iarsint' troni one to the other end oln vlinder titi and thence reversel)7 through the upper buneh olf liquid tubes 38, during; which `aioveinent said liquid is heated to its inaxiuunn degree b v the heat transmitted to liquid tubes 238 and 3T by the exhaust steani which oeeupies the vlinder 36. in the drawings are indieated three draining tubes. naniel)Y a tube GG Connected to the bottoni of boiler l Ytor the water in the latter, another tube 6T connected to the inner heating o ijlinder Si tor the condensl tion of steam therein and another tube (SS eonneeted to the outer heatingv evlinder vlt 'for the condensation of steam therein.

The method ot heating' a liquid by this apparatus, whether sneh liquid be water to be t'ed to a steani boiler, or a sugar solution previous to its concentration, or any other liquid, Consists in causing the liquid of a tank or boiler ot' low pressure to circulate through the tubea ot" a heater .fl lonnitudinail)v arranged arrose the tank l'roni one to the other head ot thiI saine. and by eontarrwith whieh heater the nias oll liquid olI the tank is also heated. To tlu` interior ot said heater the exhaust steam ot' strain turbines or engines is carried. 'the ho: liquid eoininp; out ot lsaid le: ter eirrulatef: through the tubes o' the sei-ond heater it arranged (,Xteriortr ot the tank and to the interior ot' whit'h the exhauet .strani the rtrain turbinesl or engines alr-'a rrai'he:=,

ll'hile l have here' and defer bed iii' ia shown a 'neterred t'orn. ol nur invention. l would have it. understood that rlnlngfef ina): be niade in the forni. proportion and eoastrurtion ot the various partsI within the srope ol' the appended rlaiins.

li'hat I elaiin is:

l. i heat exehane'e apparatus` whit-h rouipris-eey a tank adapted to reeeive a supply ot cold liquid to be heated. a tube heater lon i tudinallyv arranged throue'lniuty the lower part oll the tank. a ,sei-oud tube heater arranged outside the tank ineans tor adiuittintT a heating` fluid to the space around the tubes olf aeh heater. a pipe ronneeting tha` outlet troni the tubes` ol' tiret heater to the inlet to the tubes ot the .sei-oud heater. and a puiup interi'iosed between the tank and the first heater to cause the eold liquid troni the tank to eireulate tin-1t through the tuhml otl the heater inside the tank and then through the tubes ot the heater outaide the tank.

Q. heat efzrhauee apparatu:` whirh von; prises a tank adapted to receive a supply ot eold liquid to he h fated. a tubi` heater loneitudinally arraiul'ed throiufhout the lower part of the tank. a seeond tube heater arranged outaide the tank. a .snpplv tutal tor exhaust :iteaiu eonunnni` a ing with tlu` :pare around the tubes` ot' ea h heater. a pipil rouneeting the outlet troni the tube:` ot' the heater inside the tank to the inlet to the tubes ot' the heater outside thtl tank. and a punip interposed between the bottoni ol' the tank and the inlet to the tubes oll the heater iuside the tank to eause the eold liquid troni the tank to circulate troni the tank through the tubes oli the heater inside the tank. and then through the tubel oll the heater outside the tank.

In witness whereof l allix in v signature.

AQlilL'IXt) l. YI LA.

pin 

